Since re-tune on 19th July 2018, I am unable to pick up any HD channels on FVP-5000T. All worked fine before. Aerial points to Blubell Hill and has always been local transmitter. Have tried re-tune with no aerial fitted to clear channels. Manual re-tune shows no signal on “frequency” 45, 55 & 56. Aerial has a mast head amp fed directly to Humax then to an old Panasonic TV, which works fine, although I lose signals sometimes for 5 secs every half hour or so and very rarely very small pixel break up.

http://www.digitaluk.co.uk lists Sudbury as my preferred transmitter but that is Anglia and not local, besides as mentioned TV is ok.